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From "Tommaso Teofili (JIRA)" <>
Subject [jira] Updated: (SOLR-2129) Provide a Solr module for dynamic metadata extraction/indexing with Apache UIMA
Date Sun, 14 Nov 2010 09:38:18 GMT


Tommaso Teofili updated SOLR-2129:

    Attachment: SOLR-2129-version2.patch

Huge Solr-UIMA refactoring, including injecting the following information from <uimaConfig>
tag inside solrconfig:

1. added dynamic field mapping with the following syntax:
    <type name="org.apache.uima.jcas.tcas.Annotation">
      <map feature="coveredText" field="tag"/>
    <type name="org.apache.uima.jcas.tcas.AnotherAnnotationType">
      <map feature="featureName" field="anotherField"/>

2. added AnalysisEngine descriptor path (must be inside the classpath)

3. added fields' values to be analyzed, eventually merging their values to make UIMA run only
 <analyzeFields merge="false">text,title</analyzeFields>

Runtime parameters for defining overriding parameters for delegate AEs remains the same:

These changes should make the use of such a module much easier and flexible.
Looking forward for your feedback.

> Provide a Solr module for dynamic metadata extraction/indexing with Apache UIMA
> -------------------------------------------------------------------------------
>                 Key: SOLR-2129
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Tommaso Teofili
>            Assignee: Robert Muir
>         Attachments:, SOLR-2129-asf-headers.patch, SOLR-2129-version2.patch,
> Provide components to enable Apache UIMA automatic metadata extraction to be exploited
when indexing documents.
> The purpose of this is to get unstructured information "inside" a document and create
structured metadata (as fields) to enrich each document.
> Basically this can be done with a custom UpdateRequestProcessor which triggers UIMA while
indexing documents.
> The basic UIMA implementation of UpdateRequestProcessor extracts sentences (with a tokenizer
and an hidden Markov model tagger), named entities, language, suggested category, keywords
and concepts (exploiting external services from OpenCalais and AlchemyAPI). Such an implementation
can be easily extended adding or selecting different UIMA analysis engines, both from UIMA
repositories on the web or creating new ones from scratch.

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